/*
 * Copyright (C) 2015 Square, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.squareup.wire;

import static com.google.common.truth.Truth.assertThat;

import com.squareup.wire.protos.person.Person;
import java.io.IOException;
import okio.ByteString;
import org.junit.Test;
import squareup.protos.packed_encoding.EmbeddedMessage;
import squareup.protos.packed_encoding.OuterMessage;

public final class ProtoAdapterTest {
  @Test
  public void getFromClass() throws Exception {
    Person person = new Person.Builder().id(99).name("Omar Little").build();
    ByteString encoded = ByteString.decodeHex("10630a0b4f6d6172204c6974746c65");

    ProtoAdapter<Person> personAdapter = ProtoAdapter.get(Person.class);
    assertThat(ByteString.of(personAdapter.encode(person))).isEqualTo(encoded);
    assertThat(personAdapter.decode(encoded)).isEqualTo(person);
  }

  @Test
  public void getFromInstanceSameAsFromClass() throws Exception {
    Person person = new Person.Builder().id(99).name("Omar Little").build();

    ProtoAdapter<Person> instanceAdapter = ProtoAdapter.get(person);
    ProtoAdapter<Person> classAdapter = ProtoAdapter.get(Person.class);

    assertThat(instanceAdapter).isSameInstanceAs(classAdapter);
  }

  @Test
  public void repeatedHelpersCacheInstances() {
    ProtoAdapter<?> adapter = ProtoAdapter.UINT64;
    assertThat(adapter.asRepeated()).isSameInstanceAs(adapter.asRepeated());
    assertThat(adapter.asPacked()).isSameInstanceAs(adapter.asPacked());
  }

  /** https://github.com/square/wire/issues/541 */
  @Test
  public void embeddedEmptyPackedMessage() throws IOException {
    OuterMessage outerMessage =
        new OuterMessage.Builder()
            .outer_number_before(2)
            .embedded_message(new EmbeddedMessage.Builder().inner_number_after(1).build())
            .build();
    OuterMessage outerMessagesAfterSerialisation =
        OuterMessage.ADAPTER.decode(OuterMessage.ADAPTER.encode(outerMessage));
    assertThat(outerMessagesAfterSerialisation).isEqualTo(outerMessage);
  }
}
